include/msvcrt/float.h

   1 /*
   2  * Floating point arithmetic.
   3  *
   4  * Derived from the mingw header written by Colin Peters.
   5  * Modified for Wine use by Hans Leidekker.
   6  * This file is in the public domain.
   7  */
   8
   9 #ifndef __WINE_FLOAT_H
  10 #define __WINE_FLOAT_H
  11 #ifndef __WINE_USE_MSVCRT
  12 #define __WINE_USE_MSVCRT
  13 #endif
  14
  15 #ifdef __cplusplus
  16 extern "C" {
  17 #endif
  18
  19 #define DBL_DIG        15
  20 #define DBL_EPSILON    2.2204460492503131e-016
  21 #define DBL_MANT_DIG   53
  22 #define DBL_MAX        1.7976931348623158e+308
  23 #define DBL_MAX_10_EXP 308
  24 #define DBL_MAX_EXP    1024
  25 #define DBL_MIN        2.2250738585072014e-308
  26 #define DBL_MIN_10_EXP (-307)
  27 #define DBL_MIN_EXP    (-1021)
  28
  29 #define _DBL_RADIX  2
  30 #define _DBL_ROUNDS 1
  31
  32 #define DBL_RADIX  _DBL_RADIX
  33 #define DBL_ROUNDS _DBL_ROUNDS
  34
  35 #define FLT_DIG        6
  36 #define FLT_EPSILON    1.192092896e-07F
  37 #define FLT_MANT_DIG   24
  38 #define FLT_MAX        3.402823466e+38F
  39 #define FLT_MAX_10_EXP 38
  40 #define FLT_MAX_EXP    128
  41 #define FLT_MIN        1.175494351e-38F
  42 #define FLT_MIN_10_EXP (-37)
  43 #define FLT_MIN_EXP    (-125)
  44
  45 #define FLT_RADIX  2
  46 #define FLT_ROUNDS 1
  47
  48 #define LDBL_DIG        DBL_DIG
  49 #define LDBL_EPSILON    DBL_EPSILON
  50 #define LDBL_MANT_DIG   DBL_MANT_DIG
  51 #define LDBL_MAX        DBL_MAX
  52 #define LDBL_MAX_10_EXP DBL_MAX_10_EXP
  53 #define LDBL_MAX_EXP    DBL_MAX_EXP
  54 #define LDBL_MIN        DBL_MIN
  55 #define LDBL_MIN_10_EXP DBL_MIN_10_EXP
  56 #define LDBL_MIN_EXP    DBL_MIN_EXP
  57
  58 #define _LDBL_RADIX  _DBL_RADIX
  59 #define _LDBL_ROUNDS _DBL_ROUNDS
  60
  61 #define LDBL_RADIX  _LDBL_RADIX
  62 #define LDBL_ROUNDS _LDBL_ROUNDS
  63
  64 /* _controlfp masks and bitflags - x86 only so far */
  65 #ifdef __i386__
  66
  67 /* Control word masks for unMask */
  68 #define _MCW_EM 0x0008001F  /* Error masks */
  69 #define _MCW_IC 0x00040000  /* Infinity */
  70 #define _MCW_RC 0x00000300  /* Rounding */
  71 #define _MCW_PC 0x00030000  /* Precision */
  72
  73 /* Control word values for unNew (use with related unMask above) */
  74 #define _EM_INVALID    0x00000010
  75 #define _EM_DENORMAL   0x00080000
  76 #define _EM_ZERODIVIDE 0x00000008
  77 #define _EM_OVERFLOW   0x00000004
  78 #define _EM_UNDERFLOW  0x00000002
  79 #define _EM_INEXACT    0x00000001
  80 #define _IC_AFFINE     0x00040000
  81 #define _IC_PROJECTIVE 0x00000000
  82 #define _RC_CHOP       0x00000300
  83 #define _RC_UP         0x00000200
  84 #define _RC_DOWN       0x00000100
  85 #define _RC_NEAR       0x00000000
  86 #define _PC_24         0x00020000
  87 #define _PC_53         0x00010000
  88 #define _PC_64         0x00000000
  89 #endif
  90
  91 /* _statusfp bit flags */
  92 #define _SW_INEXACT    0x00000001 /* inexact (precision) */
  93 #define _SW_UNDERFLOW  0x00000002 /* underflow */
  94 #define _SW_OVERFLOW   0x00000004 /* overflow */
  95 #define _SW_ZERODIVIDE 0x00000008 /* zero divide */
  96 #define _SW_INVALID    0x00000010 /* invalid */
  97
  98 #define _SW_UNEMULATED     0x00000040  /* unemulated instruction */
  99 #define _SW_SQRTNEG        0x00000080  /* square root of a neg number */
 100 #define _SW_STACKOVERFLOW  0x00000200  /* FP stack overflow */
 101 #define _SW_STACKUNDERFLOW 0x00000400  /* FP stack underflow */
 102
 103 #define _SW_DENORMAL 0x00080000 /* denormal status bit */
 104
 105 /* fpclass constants */
 106 #define _FPCLASS_SNAN 0x0001  /* Signaling "Not a Number" */
 107 #define _FPCLASS_QNAN 0x0002  /* Quiet "Not a Number" */
 108 #define _FPCLASS_NINF 0x0004  /* Negative Infinity */
 109 #define _FPCLASS_NN   0x0008  /* Negative Normal */
 110 #define _FPCLASS_ND   0x0010  /* Negative Denormal */
 111 #define _FPCLASS_NZ   0x0020  /* Negative Zero */
 112 #define _FPCLASS_PZ   0x0040  /* Positive Zero */
 113 #define _FPCLASS_PD   0x0080  /* Positive Denormal */
 114 #define _FPCLASS_PN   0x0100  /* Positive Normal */
 115 #define _FPCLASS_PINF 0x0200  /* Positive Infinity */
 116
 117 /* floating point error signals */
 118 #define _FPE_INVALID            0x81
 119 #define _FPE_DENORMAL           0x82
 120 #define _FPE_ZERODIVIDE         0x83
 121 #define _FPE_OVERFLOW           0x84
 122 #define _FPE_UNDERFLOW          0x85
 123 #define _FPE_INEXACT            0x86
 124 #define _FPE_UNEMULATED         0x87
 125 #define _FPE_SQRTNEG            0x88
 126 #define _FPE_STACKOVERFLOW      0x8a
 127 #define _FPE_STACKUNDERFLOW     0x8b
 128 #define _FPE_EXPLICITGEN        0x8c
 129
 130 double _copysign (double, double);
 131 double _chgsign (double);
 132 double _scalb(double, long);
 133 double _logb(double);
 134 double _nextafter(double, double);
 135 int    _finite(double);
 136 int    _isnan(double);
 137 int    _fpclass(double);
 138
 139 #ifdef __cplusplus
 140 }
 141 #endif
 142
 143 #endif /* __WINE_FLOAT_H */